JP4687462B2 - Ｓａｗフィルタ - Google Patents

Ｓａｗフィルタ Download PDF

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Publication number
JP4687462B2
JP4687462B2 JP2005515692A JP2005515692A JP4687462B2 JP 4687462 B2 JP4687462 B2 JP 4687462B2 JP 2005515692 A JP2005515692 A JP 2005515692A JP 2005515692 A JP2005515692 A JP 2005515692A JP 4687462 B2 JP4687462 B2 JP 4687462B2
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JP
Japan
Prior art keywords
idt
saw filter
electrode
saw
pitch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2005515692A
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English (en)
Japanese (ja)
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JPWO2005050837A1 (ja
Inventor
和紀 西村
努 井垣
賢 松波
弘幸 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2005515692A priority Critical patent/JP4687462B2/ja
Publication of JPWO2005050837A1 publication Critical patent/JPWO2005050837A1/ja
Application granted granted Critical
Publication of JP4687462B2 publication Critical patent/JP4687462B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/0274—Intra-transducers grating lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14588—Horizontally-split transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6426—Combinations of the characteristics of different transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes
    • H03H9/6473—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes the electrodes being electrically interconnected

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP2005515692A 2003-11-21 2004-11-18 Ｓａｗフィルタ Active JP4687462B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005515692A JP4687462B2 (ja) 2003-11-21 2004-11-18 Ｓａｗフィルタ

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2003392224 2003-11-21
JP2003392224 2003-11-21
PCT/JP2004/017527 WO2005050837A1 (ja) 2003-11-21 2004-11-18 弾性表面波フィルタ
JP2005515692A JP4687462B2 (ja) 2003-11-21 2004-11-18 Ｓａｗフィルタ

Publications (2)

Publication Number Publication Date
JPWO2005050837A1 JPWO2005050837A1 (ja) 2007-06-14
JP4687462B2 true JP4687462B2 (ja) 2011-05-25

Family

ID=34616441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005515692A Active JP4687462B2 (ja) 2003-11-21 2004-11-18 Ｓａｗフィルタ

Country Status (5)

Country Link
US (1) US7501917B2 (ko)
JP (1) JP4687462B2 (ko)
KR (1) KR101067395B1 (ko)
CN (1) CN100508382C (ko)
WO (1) WO2005050837A1 (ko)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7679474B2 (en) * 2004-01-09 2010-03-16 Panasonic Corporation Surface acoustic wave resonator, and surface acoustic wave filter
JP2009088999A (ja) 2007-09-28 2009-04-23 Nippon Dempa Kogyo Co Ltd 弾性波フィルタ
JP4734436B2 (ja) * 2008-04-11 2011-07-27 日本電波工業株式会社 デュプレクサ
CN102365822B (zh) * 2009-04-07 2014-07-09 株式会社村田制作所 弹性边界波谐振器以及梯型滤波器
JP2011205625A (ja) * 2010-03-02 2011-10-13 Panasonic Corp ラダー型フィルタ
CN104467734B (zh) * 2014-11-07 2017-10-20 深圳华远微电科技有限公司 Gps和bds用声表面波滤波器及其小型化封装工艺
DE102015107231B4 (de) * 2015-05-08 2021-09-16 Snaptrack, Inc. Kaskadierter Resonator
CN105406834B (zh) * 2015-11-19 2017-12-01 北京中讯四方科技股份有限公司 一种基于电容加权的扇形单相单向换能器声表滤波器
CN114039575A (zh) * 2016-01-29 2022-02-11 京瓷株式会社 弹性波谐振器、弹性波滤波器、分波器及通信装置
JP6627816B2 (ja) * 2016-06-08 2020-01-08 株式会社村田製作所 マルチプレクサおよび高周波フロントエンドモジュール
US11070194B2 (en) 2018-08-17 2021-07-20 Qorvo Us, Inc. Ladder-type surface acoustic wave device
CN109802651A (zh) * 2019-02-26 2019-05-24 上海龙旗科技股份有限公司 声表面波滤波装置及电子产品
WO2021060513A1 (ja) * 2019-09-27 2021-04-01 株式会社村田製作所 弾性波装置
JP2021132361A (ja) * 2020-02-21 2021-09-09 株式会社村田製作所 弾性波装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08181565A (ja) * 1994-12-22 1996-07-12 Maruyasu Kogyo Kk 弾性表面波変換器
JPH08242140A (ja) * 1994-12-23 1996-09-17 Advanced Saw Prod Sa Ｓａｗフィルタ
JPH10242799A (ja) * 1997-02-26 1998-09-11 Kyocera Corp 弾性表面波フィルタ
JP2001358555A (ja) * 2000-06-09 2001-12-26 Seiko Epson Corp 弾性表面波共振子
JP2002528987A (ja) * 1998-10-28 2002-09-03 エプコス アクチエンゲゼルシャフト 少なくとも２つの表面波構造体を備えた表面波装置
WO2003003574A1 (fr) * 2001-06-29 2003-01-09 Matsushita Electric Industrial Co., Ltd. Filtre a onde acoustique de surface
JP2003198317A (ja) * 2001-12-21 2003-07-11 Fujitsu Media Device Kk 弾性表面波共振子及び弾性表面波フィルタ
WO2003081773A1 (de) * 2002-03-25 2003-10-02 Epcos Ag Filter mit akustisch gekoppelten resonatoren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08265099A (ja) * 1995-03-20 1996-10-11 Oki Electric Ind Co Ltd 共振器型弾性表面波フィルタ
JPH09270663A (ja) 1996-01-29 1997-10-14 Kyocera Corp 弾性表面波装置
JP3377902B2 (ja) 1996-02-22 2003-02-17 沖電気工業株式会社 弾性表面波フィルタ
JPH09246911A (ja) * 1996-03-07 1997-09-19 Oki Electric Ind Co Ltd 共振器型弾性表面波フィルタ
JPH1188112A (ja) * 1997-09-12 1999-03-30 Fujitsu Ltd 弾性表面波素子
JPH11163664A (ja) 1997-11-28 1999-06-18 Kyocera Corp 弾性表面波フィルタ
JP4138093B2 (ja) 1998-09-08 2008-08-20 エプソントヨコム株式会社 縦結合二重モードｓａｗフィルタ
JP3260347B2 (ja) 1999-01-01 2002-02-25 富士通株式会社 弾性表面波素子

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08181565A (ja) * 1994-12-22 1996-07-12 Maruyasu Kogyo Kk 弾性表面波変換器
JPH08242140A (ja) * 1994-12-23 1996-09-17 Advanced Saw Prod Sa Ｓａｗフィルタ
JPH10242799A (ja) * 1997-02-26 1998-09-11 Kyocera Corp 弾性表面波フィルタ
JP2002528987A (ja) * 1998-10-28 2002-09-03 エプコス アクチエンゲゼルシャフト 少なくとも２つの表面波構造体を備えた表面波装置
JP2001358555A (ja) * 2000-06-09 2001-12-26 Seiko Epson Corp 弾性表面波共振子
WO2003003574A1 (fr) * 2001-06-29 2003-01-09 Matsushita Electric Industrial Co., Ltd. Filtre a onde acoustique de surface
JP2003198317A (ja) * 2001-12-21 2003-07-11 Fujitsu Media Device Kk 弾性表面波共振子及び弾性表面波フィルタ
WO2003081773A1 (de) * 2002-03-25 2003-10-02 Epcos Ag Filter mit akustisch gekoppelten resonatoren
JP2005521319A (ja) * 2002-03-25 2005-07-14 エプコス　アクチエンゲゼルシャフト 音響的に結合された共振器を有するフィルタ

Also Published As

Publication number Publication date
US7501917B2 (en) 2009-03-10
KR101067395B1 (ko) 2011-09-27
CN1883113A (zh) 2006-12-20
WO2005050837A1 (ja) 2005-06-02
CN100508382C (zh) 2009-07-01
US20070069837A1 (en) 2007-03-29
JPWO2005050837A1 (ja) 2007-06-14
KR20060101487A (ko) 2006-09-25

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